body{
    position: relative;
}
.bittle-big{
    height:40px;
    width:100%;
    position:fixed;
    top:0;
    left:0;
}
.bittle-cen{
    height:40px;
    width:1200px;
    margin:0 auto;
    border:1px solid red;
    margin-top:40px;
    overflow: hidden;
}
.bittle{
    
    /* position:absolute; */
    /* top:0; */
    /* left:300px;   */
    background-color: rgb(224, 212, 212);  
}
.bittle-pic{
    width:150px;
    height:40px;
}
.bittle-pic img{
    width:150px;
    height:40px;
}
.bittle-name p{
    line-height:40px;
    font-size:20px;
    width:300px;
    /* border-left:1px solid gray; */
    padding-left:20px;
}
.bittle-name span{
    background: rgba(0,0,0,0.2);
    width: 1px;
    float: left;
    margin: 10px 16px;
}
.bittle-tit{
    height:180px;
    width:1200px;
    line-height: 180px;
    font-size: 20px;
    text-align: center;
}

.bittle-big2{
    height:40px;
}

/* 中部  */
.center{
    height:450px;
    display: flex;
    justify-content: center;
    
}
.center-cen{
    width:1200px;
    margin: 0 auto;
    text-align: center;
    border:1px solid green;
}
.center-tit{
    width:1200px;
    height:60px;
    line-height: 60px;
    font-size: 40px;
    text-align: center;
}
.center-tip{
    width:1200px;
    height:40px;
    line-height: 40px;
    font-size: 20px;
    text-align: center;
}
.form-group{
    width:1200px;
    height:70px;
    line-height: 40px;
    font-size: 20px;
    text-align: center;
    display: flex;
    justify-content: center;
}
.tip1{
    width:120px;
}
.tip3{
    height:25px;
}
.tip4{
    width:50px;
}















.bottom{
    position:fixed;
    left:0;
    bottom:0;
    width:100%;
    height:60px;
}

.bottom-cen{
    height:40px;
    width:1200px;
    margin:0 auto;
    border:1px solid red;
    margin-top:20px;
    overflow: hidden;
}
.bottom-cenn{
    
    /* position:absolute; */
    /* top:0; */
    /* left:300px;   */
    background-color: rgb(224, 212, 212);  
}
.bottom-li{
    float: left;
    margin:10px 100px;
    text-align: center;
}
